A lot of the responses are offering an all or none response. The issue isn’t OP wants to block all memes posts, they just don’t want to see them as often.
This is an algorithm/fedi issue I suspect. It would require curation.
Since fedi isn’t really about that, the only option is to downvote.
Downvote shitty memes.
Pay for that?
$. Almost every reason for shutting off boils down to lack of financial support to keep it running.
This happens a LOT more often than you think. I worked with a well-connected person that killed a dude while she was drunk driving. She was not in jail at any point.
The last panel but also with an instruction pamphlet.
Anyone that was around while Reddit was growing will remember that there were few subreddits to begin with. I think fediverse needs that to happen before expanding.
I don’t know how to fix it. Maybe sub-feddits need to be pruned if they aren’t thriving. Maybe tags in titles would be more helpful until they have enough content to warrant their on category.